192494Ssobomax// SPDX-License-Identifier: GPL-2.0 292494Ssobomax/* 392494Ssobomax * pcl724.c 492494Ssobomax * Comedi driver for 8255 based ISA and PC/104 DIO boards 592494Ssobomax * 692494Ssobomax * Michal Dobes <dobes@tesnet.cz> 792494Ssobomax */ 892494Ssobomax 992494Ssobomax/* 1092494Ssobomax * Driver: pcl724 1192494Ssobomax * Description: Comedi driver for 8255 based ISA DIO boards 1292494Ssobomax * Devices: [Advantech] PCL-724 (pcl724), PCL-722 (pcl722), PCL-731 (pcl731), 1392494Ssobomax * [ADLink] ACL-7122 (acl7122), ACL-7124 (acl7124), PET-48DIO (pet48dio), 1492494Ssobomax * [WinSystems] PCM-IO48 (pcmio48), 1592494Ssobomax * [Diamond Systems] ONYX-MM-DIO (onyx-mm-dio) 1692494Ssobomax * Author: Michal Dobes <dobes@tesnet.cz> 1792494Ssobomax * Status: untested 1892494Ssobomax * 1992494Ssobomax * Configuration options: 2092494Ssobomax * [0] - IO Base 2192494Ssobomax * [1] - IRQ (not supported) 2292494Ssobomax * [2] - number of DIO (pcl722 and acl7122 boards) 2392494Ssobomax * 0, 144: 144 DIO configuration 2492494Ssobomax * 1, 96: 96 DIO configuration 2592494Ssobomax */ 2692494Ssobomax 2792494Ssobomax#include <linux/module.h> 2892494Ssobomax#include <linux/comedi/comedidev.h> 2992494Ssobomax#include <linux/comedi/comedi_8255.h> 3092494Ssobomax 3192494Ssobomaxstruct pcl724_board { 3292494Ssobomax const char *name; 3392494Ssobomax unsigned int io_range; 3492494Ssobomax unsigned int can_have96:1; 3592494Ssobomax unsigned int is_pet48:1; 3692494Ssobomax int numofports; 3792494Ssobomax}; 3892494Ssobomax 3992494Ssobomaxstatic const struct pcl724_board boardtypes[] = { 4092494Ssobomax { 4192494Ssobomax .name = "pcl724", 4292494Ssobomax .io_range = 0x04, 4392494Ssobomax .numofports = 1, /* 24 DIO channels */ 4492494Ssobomax }, { 4592494Ssobomax .name = "pcl722", 4692494Ssobomax .io_range = 0x20, 47124572Sjhb .can_have96 = 1, 4892494Ssobomax .numofports = 6, /* 144 (or 96) DIO channels */ 4992494Ssobomax }, { 5092494Ssobomax .name = "pcl731", 5192494Ssobomax .io_range = 0x08, 5292494Ssobomax .numofports = 2, /* 48 DIO channels */ 5392494Ssobomax }, { 5492494Ssobomax .name = "acl7122", 5592494Ssobomax .io_range = 0x20, 5692494Ssobomax .can_have96 = 1, 5792494Ssobomax .numofports = 6, /* 144 (or 96) DIO channels */ 5892494Ssobomax }, { 5992494Ssobomax .name = "acl7124", 6092494Ssobomax .io_range = 0x04, 6192494Ssobomax .numofports = 1, /* 24 DIO channels */ 6292494Ssobomax }, { 6392494Ssobomax .name = "pet48dio", 6492494Ssobomax .io_range = 0x02, 6592494Ssobomax .is_pet48 = 1, 6692494Ssobomax .numofports = 2, /* 48 DIO channels */ 6792494Ssobomax }, { 68124571Sjhb .name = "pcmio48", 6992494Ssobomax .io_range = 0x08, 70124571Sjhb .numofports = 2, /* 48 DIO channels */ 7192494Ssobomax }, { 7292494Ssobomax .name = "onyx-mm-dio", 7392494Ssobomax .io_range = 0x10, 7492494Ssobomax .numofports = 2, /* 48 DIO channels */ 7592494Ssobomax }, 7692494Ssobomax}; 77124571Sjhb 78124571Sjhbstatic int pcl724_8255mapped_io(struct comedi_device *dev, 7992494Ssobomax int dir, int port, int data, 8092494Ssobomax unsigned long iobase) 8192494Ssobomax{ 82124572Sjhb int movport = I8255_SIZE * (iobase >> 12); 83124572Sjhb 84124572Sjhb iobase &= 0x0fff; 85124572Sjhb 86124572Sjhb outb(port + movport, iobase); 87124572Sjhb if (dir) { 88124572Sjhb outb(data, iobase + 1); 89124572Sjhb return 0; 90124572Sjhb } 91124572Sjhb return inb(iobase + 1); 92124572Sjhb} 93124572Sjhb 94124572Sjhbstatic int pcl724_attach(struct comedi_device *dev, 95124572Sjhb struct comedi_devconfig *it) 96124572Sjhb{ 97124572Sjhb const struct pcl724_board *board = dev->board_ptr; 98124572Sjhb struct comedi_subdevice *s; 99124572Sjhb unsigned long iobase; 100124572Sjhb unsigned int iorange; 101124572Sjhb int n_subdevices; 102124572Sjhb int ret; 103124572Sjhb int i; 10492494Ssobomax 10592494Ssobomax iorange = board->io_range; 10692494Ssobomax n_subdevices = board->numofports; 10792494Ssobomax 10892494Ssobomax /* Handle PCL-724 in 96 DIO configuration */ 10992494Ssobomax if (board->can_have96 && 11092494Ssobomax (it->options[2] == 1 || it->options[2] == 96)) { 11192494Ssobomax iorange = 0x10; 11292494Ssobomax n_subdevices = 4; 11392494Ssobomax } 11492494Ssobomax 11592494Ssobomax ret = comedi_request_region(dev, it->options[0], iorange); 11692494Ssobomax if (ret) 11792494Ssobomax return ret; 11892494Ssobomax 11992494Ssobomax ret = comedi_alloc_subdevices(dev, n_subdevices); 12092494Ssobomax if (ret) 12192494Ssobomax return ret; 12292494Ssobomax 12392494Ssobomax for (i = 0; i < dev->n_subdevices; i++) { 12492494Ssobomax s = &dev->subdevices[i]; 12592494Ssobomax if (board->is_pet48) { 12692494Ssobomax iobase = dev->iobase + (i * 0x1000); 12792494Ssobomax ret = subdev_8255_cb_init(dev, s, pcl724_8255mapped_io, 12892494Ssobomax iobase); 12992494Ssobomax } else { 13092494Ssobomax ret = subdev_8255_io_init(dev, s, i * I8255_SIZE); 13192494Ssobomax } 13292494Ssobomax if (ret) 13392494Ssobomax return ret; 13492494Ssobomax } 13592494Ssobomax 13692494Ssobomax return 0; 13792494Ssobomax} 13892494Ssobomax 13992494Ssobomaxstatic struct comedi_driver pcl724_driver = { 14092494Ssobomax .driver_name = "pcl724", 14192494Ssobomax .module = THIS_MODULE, 14292494Ssobomax .attach = pcl724_attach, 14392494Ssobomax .detach = comedi_legacy_detach, 14492494Ssobomax .board_name = &boardtypes[0].name, 14592494Ssobomax .num_names = ARRAY_SIZE(boardtypes), 14692494Ssobomax .offset = sizeof(struct pcl724_board), 14792494Ssobomax}; 14892494Ssobomaxmodule_comedi_driver(pcl724_driver); 14992494Ssobomax 15092494SsobomaxMODULE_AUTHOR("Comedi https://www.comedi.org"); 15192494SsobomaxMODULE_DESCRIPTION("Comedi driver for 8255 based ISA and PC/104 DIO boards"); 15292494SsobomaxMODULE_LICENSE("GPL"); 15392494Ssobomax